Answer:
1. The variables under study are:
- Attendance rate: The percentage of time students attended class.
- Grades: The letter grades received by students in Mr. Spencer's math class.
2. The data in the study includes:
- Attendance rates of students in Mr. Spencer's math class.
- Corresponding letter grades received by students.
3. Both descriptive and inferential statistics are used in this study. Descriptive statistics are used to describe and summarize the attendance rates and corresponding grades of the students. Inferential statistics may be used to make generalizations or draw conclusions about the larger population based on the collected data.
4. The population under study is all students in Mr. Spencer's math classes.
5. It is not explicitly mentioned in the information whether a sample was collected or not. However, based on the description, we can assume that the data was collected from the students in Mr. Spencer's math classes.
6. Based on the information given, we can observe a relationship between attendance rates and grades. Students who attended class at least 90% of the time usually received an A. Students with attendance rates between 80% and 90% usually received a B or C. Students who attended class less than 80% of the time usually received a D or F. Therefore, there appears to be a positive correlation between attendance rate and grade, indicating that higher attendance is associated with higher grades in Mr. Spencer's math class. However, it is important to note that this conclusion is based on the given information and may not account for other factors that could influence grades.
Explanation:
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